B1+ Paper Size, Dimensions and Format (B series)


720 x 1020




Aspect ratio 1:1.42
Perimeter (P) 3,480 mm
Diagonal (d) 1,248.52 mm
Area (A) 734,400 mm²


The B1+ format measures 720 x 1020 mm or 28.3 x 40.2 inches. An B1+ paper fromat has an aspect ratio of 1:1.42. The Area of the B1+ paper size is 734,400 mm² or 1,137.66 in² with a perimeter of 3,480 mm or 137 in. An B1+ format has a diagonal length of 1,248.52 mm or 49.16 in. The B1+ size belongs to the B series. In the B series there are a total of 17 paper sizes.

Frequently Asked Questions

The size of an B1+ paper is 720 x 1020 mm

The size of an B1+ paper in inches is 28.3 x 40.2 in

The half size of an B1+ paper is 360 x 510 mm or 14.15 x 20.1 in

The aspect ratio of an B1+ is 1:1.42

The area of an B1+ paper is 734,400 mm or 1,137.66 in

The perimeter of an B1+ paper is 3,480 mm or 137 in

The diagonal measurement of B1+ paper is 1,248.52 mm or 49.16 in

Other B Paper Sizes →

There are a total of 17 B Paper Sizes.